Evaluation of residual stress relaxation and its effect on fatigue strength of AISI 316L stainless steel ground surfaces: Experimental and numerical approaches
This paper is aimed at evaluating the residual stress relaxation and its effect on the fatigue
strength of AISI 316L steel ground surfaces in comparison to electro-polished surfaces. An
experimental evaluation was performed using 3-point and 4-point bending fatigue tests at
Rσ= 0.1 on two sets of notched specimens finished by electro-polishing and grinding. The
residual stress fields were measured at the notch root of specimens, before and after fatigue
tests, by means of the X-ray diffraction technique. It was found a degradation of about− 35 …
strength of AISI 316L steel ground surfaces in comparison to electro-polished surfaces. An
experimental evaluation was performed using 3-point and 4-point bending fatigue tests at
Rσ= 0.1 on two sets of notched specimens finished by electro-polishing and grinding. The
residual stress fields were measured at the notch root of specimens, before and after fatigue
tests, by means of the X-ray diffraction technique. It was found a degradation of about− 35 …
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